摘要
永磁辅助式同步磁阻电机(Permanent Magnet Assisted Synchronous Reluctance Motor, PMA-SynRM)通过非对称转子设计可有效提高永磁转矩和磁阻转矩的利用率从而提升电磁转矩,但同时也会带来齿槽转矩增加导致转矩脉动过大的问题。基于此,采用定子侧开辅助槽和改变极槽配合及绕组分布形式两种方法来降低非对称转子PMA-SynRM的转矩脉动。通过磁动势分析和有限元方法分析,对两种电机模型的电磁性能进行对比研究。结果表明,采用27槽分布式绕组定子结构的电机模型在保证充分利用转矩成分的前提下可有效抑制齿槽转矩和转矩脉动,同时还能有效提升该非对称转子结构的聚磁特性而提升转矩。
The permanent magnet assisted synchronous reluctance motor(PMA-SynRM) with the asymmetric rotor design can effectively improve the utilization rate of magnetic torque and reluctance torque, thus to improve the torque density. However, the asymmetric rotor design also increases the cogging torque, resulting in excessive torque ripple. Therefore, two methods are presented to reduce the torque ripple by opening the stator auxiliary slot and changing the pole slot combinations and winding distributions. Through the magnetomotive force analysis and finite element method analysis, the electromagnetic performance of the motor models obtained by the two methods is compared and studied. The results show that the motor model having the stator structure with 27-slot distributed windings can effectively suppress the cogging torque and torque ripple while ensuring the full use of the torque components, and at the same time enhance the flux focusing effects of the asymmetric rotor structure to improve the torque.
作者
李敏
赵文良
杨智铄
刘炎
LI Min;ZHAO Wen-liang;YANG Zhi-shuo;LIU Yan(School of Electrical Engineering,Shandong University,Ji'nan 250061;Institute of AECC Aero-Engine Control System,Wuxi 214063)
出处
《导航与控制》
2021年第5期52-60,共9页
Navigation and Control
基金
国家自然科学基金(编号:51707107,52077123)
中国博士后科学基金特别资助项目(编号:2018T110688)
山东大学青年学者未来计划项目(编号:2018WLJH29)。
关键词
永磁辅助式同步磁阻电机
非对称转子
转矩脉动
磁动势
极槽配合
permanent magnet assisted synchronous reluctance motor(PMA-SynRM)
asymmetric rotor
torque ripple
magnetomotive force
pole and slot combinations
